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Title: Water-induced nanochannel networks in self-assembled block ionomers

Abstract

Block ionomers cast from solution exhibit solvent-templated morphologies that can be altered by solvent-vapor annealing. When cast from a mixed solvent, a midblock-sulfonated pentablock ionomer self-assembles into spherical ionic microdomains that are loosely connected. Upon exposure to liquid water, nanoscale channels irreversibly develop between the microdomains due to swelling and form a continuous mesoscale network. We use electron tomography and real-time X-ray scattering to follow this transformation and show that the resultant morphology provides a highly effective diffusive pathway.

Authors:
 [1];  [2];  [3]
  1. Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695 (United States)
  2. Fiber and Polymer Science Program, North Carolina State University, Raleigh, North Carolina 27695 (United States)
  3. Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
Publication Date:
OSTI Identifier:
22591408
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 108; Journal Issue: 10; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANNEALING; MATHEMATICAL SOLUTIONS; MIXED SOLVENTS; MORPHOLOGY; NANOSTRUCTURES; SPHERICAL CONFIGURATION; WATER; X-RAY DIFFRACTION

Citation Formats

Mineart, Kenneth P., Al-Mohsin, Heba A., Lee, Byeongdu, Spontak, Richard J., E-mail: Rich-Spontak@ncsu.edu, and Department of Materials Science and Engineering North Carolina State University, Raleigh, North Carolina 27695. Water-induced nanochannel networks in self-assembled block ionomers. United States: N. p., 2016. Web. doi:10.1063/1.4943505.
Mineart, Kenneth P., Al-Mohsin, Heba A., Lee, Byeongdu, Spontak, Richard J., E-mail: Rich-Spontak@ncsu.edu, & Department of Materials Science and Engineering North Carolina State University, Raleigh, North Carolina 27695. Water-induced nanochannel networks in self-assembled block ionomers. United States. https://doi.org/10.1063/1.4943505
Mineart, Kenneth P., Al-Mohsin, Heba A., Lee, Byeongdu, Spontak, Richard J., E-mail: Rich-Spontak@ncsu.edu, and Department of Materials Science and Engineering North Carolina State University, Raleigh, North Carolina 27695. Mon . "Water-induced nanochannel networks in self-assembled block ionomers". United States. https://doi.org/10.1063/1.4943505.
@article{osti_22591408,
title = {Water-induced nanochannel networks in self-assembled block ionomers},
author = {Mineart, Kenneth P. and Al-Mohsin, Heba A. and Lee, Byeongdu and Spontak, Richard J., E-mail: Rich-Spontak@ncsu.edu and Department of Materials Science and Engineering North Carolina State University, Raleigh, North Carolina 27695},
abstractNote = {Block ionomers cast from solution exhibit solvent-templated morphologies that can be altered by solvent-vapor annealing. When cast from a mixed solvent, a midblock-sulfonated pentablock ionomer self-assembles into spherical ionic microdomains that are loosely connected. Upon exposure to liquid water, nanoscale channels irreversibly develop between the microdomains due to swelling and form a continuous mesoscale network. We use electron tomography and real-time X-ray scattering to follow this transformation and show that the resultant morphology provides a highly effective diffusive pathway.},
doi = {10.1063/1.4943505},
url = {https://www.osti.gov/biblio/22591408}, journal = {Applied Physics Letters},
issn = {0003-6951},
number = 10,
volume = 108,
place = {United States},
year = {2016},
month = {3}
}

Works referencing / citing this record:

Ordering and Grain Growth in Charged Block Copolymer Bulk Films: A Comparison of Solvent‐Related Processes
journal, February 2018


Temperature- and doping-dependent roles of valleys in the thermoelectric performance of SnSe: A first-principles study
journal, August 2017